Microsoft has added a new feature to OneDrive. You can now create a personal vault that requires addition security to access. With the Personal Vault, you setup additional authentication to access your documents on OneDrive.

 Depending on if you are accessing it from your Desktop or a mobile device you have to provide either a special pin or approve the access from your Microsoft Authenticator app.

With your mobile phone's camera, you can even scan cards, licenses and other important documents directly into your secure folder.